Filter Assembly for X-ray Imaging with Segmented Filters
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Solution Overview
Problem
Current imaging systems face challenges in acquiring high-quality image data with selected filters, particularly in surgical procedures where precise anatomical visualization is crucial.
Innovation Solution
The proposed imaging system incorporates a filter assembly with multiple filter members that can be strategically positioned to filter x-rays at different energy characteristics, allowing for enhanced contrast and detailed imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple filters are used to improve image contrast and detail, then image quality is improved, but device complexity increases
Solution Approach 1:
The filter system is divided into multiple discrete filter members (first filter, second filter, third filter) that can be independently selected and positioned. Each filter member has specific energy characteristics, allowing the system to segment the filtering function into manageable, interchangeable components that improve image quality without requiring a completely complex integrated system.
Solution Approach 2:
The filter assembly is designed as a universal system that can accommodate multiple different filter members (at least three distinct filters with different energy characteristics) within a single assembly structure. This multi-functional design allows the same assembly to perform various filtering operations by simply changing which filter member is positioned in the x-ray beam path.
2Measurement precision
If filters are positioned to filter x-rays at different energy characteristics, then contrast imaging is improved, but the number of components increases
Solution Approach 1:
Multiple filter members with different energy characteristics are merged into a single filter assembly structure. The assembly integrates the first filter, second filter, and third filter (each with distinct energy characteristics) into one unified component system that can be positioned together, reducing the number of separate assemblies needed while maintaining the ability to achieve contrast imaging at different energies.
3Object-affected harmful factors
If a filter member is moved into the x-ray beam path, then scatter radiation is reduced, but image acquisition time may increase
Solution Approach 1:
The filter member is positioned in advance into the x-ray beam path between the x-ray source and the subject before image acquisition begins. This preliminary positioning ensures that scatter radiation is reduced from the start of the imaging process, eliminating the need for repeated adjustments or corrections during image acquisition and thereby minimizing any potential time loss.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the acquisition of high-quality image data with improved contrast and detail, facilitating more precise surgical procedures and reducing radiation exposure.
Implementation Method 1
a filter assembly including a first filter member, a second filter member, and a third filter member. Each of the first filter member, the second filter member, and the third filter member may be moved into the x-ray beam path
Implementation Method 2
Ho Lee et al: 'Binary moving-blocker-based scatter correction in cone-beam computed tomography with width-truncated projections'
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A method and system is disclosed for acquiring image data of a subject. The image data can be collected with an imaging system with a selected filtering characteristic. The image data can be reconstructed using reconstruction techniques.